search for: recpognized

I just installed CentOS 3.5. Included in the install was mysql. When trying to start it using: service mysqld start. The system responds with mysqld not recpognized as a service. When trying to use /usr/bin/mysql I receive this error: ERROR 2002: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2). A search of the system does not reveal mysql.sock. Anyone have any ideas? Thanks for any assistance. Ed